An object weighs 79.1 n in air. when it is suspended from a force scale and completely immersed in water the scale reads 21.8 n. determine the density of the object. (b)when the object is immersed in oil, the force scale reads 48.4 n. calculate the density of the oil.

(a). The density of the object is 1382 kg/m³.

(b). The density of the oil is 536.4 kg/m³.

Explanation:

Given that,

Weight in air = 79.1 N

Weight in water = 21.8 N

Weight in oil = 48.4 N

We need to calculate the volume of object

Using formula of buoyant force

Put the value into the formula

We need to calculate the density

Using formula of buoyant force

The density of the object is 1382 kg/m³.

(b). We need to calculate the volume of object

Using formula of buoyant force

We need to calculate the density

Using formula of buoyant force

The density of the oil is 536.4 kg/m³.

Hence, This is the required solution.

the body's situation won't change the forces are equal opposit and on the same body

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